Absorption Heat Transformer for Recovering Low Temperature Heat (AHT)

Large quantity of usable thermal energy from exhaust gases, cooling water or cooling air in industrial processes is emitted into environment every year in the world, causing energy waste and serious thermal pollution. On the other hand, many industrial processes require steam or hot water in great amount to heat fluid stream. As a very effective technique, absorption heat transformer (AHT) can be applied to upgrade large quantity of low-grade waste heat with temperature of 60 - 100ºC in industrial processes. Due to its high recovery ratio (about 50%) of waste heat, outstanding contribution to environment protection and very low energy consumption, AHT has already drawn grat attention in the field of waste heat reutilization in industrial processes.
In 1999, the first domestic industrial-scale AHT unit was set up in Synthetic Rubber Division of SINOPEC Yanshan Petrochemical Company (BYPC), used for recovering the waste heat of 98 ºC released from the steam stripping vapour, i.e. steam and organic mixture vapour, in coagulation section.